1 /*

     2  * copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    24 

    25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSETS_HPP

    26 #define SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSETS_HPP

    27 

    28 #include "gc_implementation/g1/heapRegionSet.inline.hpp"

    29 

    30 //////////////////// FreeRegionList ////////////////////

    31 

    32 class FreeRegionList : public HeapRegionLinkedList {

    33 protected:

    34   virtual const char* verify_region_extra(HeapRegion* hr);

    35 

    36   virtual bool regions_humongous() { return false; }

    37   virtual bool regions_empty()     { return true;  }

    38 

    39 public:

    40   FreeRegionList(const char* name) : HeapRegionLinkedList(name) { }

    41 };

    42 

    43 //////////////////// MasterFreeRegionList ////////////////////

    44 

    45 class MasterFreeRegionList : public FreeRegionList {

    46 protected:

    47   virtual bool check_mt_safety();

    48 

    49 public:

    50   MasterFreeRegionList(const char* name) : FreeRegionList(name) { }

    51 };

    52 

    53 //////////////////// SecondaryFreeRegionList ////////////////////

    54 

    55 class SecondaryFreeRegionList : public FreeRegionList {

    56 protected:

    57   virtual bool check_mt_safety();

    58 

    59 public:

    60   SecondaryFreeRegionList(const char* name) : FreeRegionList(name) { }

    61 };

    62 

    63 //////////////////// HumongousRegionSet ////////////////////

    64 

    65 class HumongousRegionSet : public HeapRegionSet {

    66 protected:

    67   virtual const char* verify_region_extra(HeapRegion* hr);

    68 

    69   virtual bool regions_humongous() { return true;  }

    70   virtual bool regions_empty()     { return false; }

    71 

    72 public:

    73   HumongousRegionSet(const char* name) : HeapRegionSet(name) { }

    74 };

    75 

    76 //////////////////// MasterHumongousRegionSet ////////////////////

    77 

    78 class MasterHumongousRegionSet : public HumongousRegionSet {

    79 protected:

    80   virtual bool check_mt_safety();

    81 

    82 public:

    83   MasterHumongousRegionSet(const char* name) : HumongousRegionSet(name) { }

    84 };

    85 

    86 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSETS_HPP